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YT Theatermode

Auto and full screeded Theater mode.

As of 2021-10-18. See the latest version.

// ==UserScript==
// @name        YT Theatermode
// @namespace   YT Theatermode
// @author      ndaesik
// @include     https://www.youtube.com/*
// @run-at      document-start
// @icon        https://lh3.googleusercontent.com/iLZyxGK7l1343U4E7eAfgKbRWW6qhzCJq-Z92M60JzCMntFyaFF2GUQVRxPhfGcy6qRISLjHv4fX1vtq0TZkZMAzBjM
// @description Auto and full screeded Theater mode.
// @version     1.0
// ==/UserScript==


window.addEventListener("yt-navigate-finish", function(event) {
  var timer = setTimeout(function() {
      if ((document.querySelector('ytd-player').offsetWidth + 100) < window.innerWidth) {
          document.querySelector('.ytp-size-button').click();
          console.log("hello");
    }
  }, 500)
})

var styles = `
[dark] .gstl_50.sbdd_a *{background-color:#232323!important;border-color:#282828!important}
[dark] .gsfs,[dark] .sbpqs_a{color:#FFF!important}

ytd-app:not([guide-persistent-and-visible]) ytd-page-manager {
  margin-top: 0!important;
}

ytd-app:not([guide-persistent-and-visible]) #player-theater-container:empty~#columns #primary,
ytd-app:not([guide-persistent-and-visible]) #player-theater-container:empty~#columns #secondary{
    padding-top: 56px;
}

ytd-app:not([guide-persistent-and-visible]) ytd-masthead,
ytd-app:not([guide-persistent-and-visible]) #masthead-container.ytd-app::after {
  transform: translateY(-56px);
  transition: transform .1s .5s ease-out;
}
ytd-app:not([guide-persistent-and-visible]) #masthead-container:hover ytd-masthead,
ytd-app:not([guide-persistent-and-visible]) #masthead-container:hover.ytd-app::after {
  transform: translateY(0px);
}

ytd-app:not([guide-persistent-and-visible]) [theater] #player.ytd-watch {
  height: 100vh!important;
  max-height: 100vh!important;
}

ytd-watch-flexy[theater] #player-theater-container.ytd-watch-flexy,
ytd-watch-flexy[fullscreen] #player-theater-container.ytd-watch-flexy,
ytd-app:not([guide-persistent-and-visible]) [theater] #player video {
  width: 100%!important;
  height: 100vh!important;
  max-height: 100vh!important;
  max-width: 100%!important;
  left: 0!important;
}

ytd-app:not([guide-persistent-and-visible]) .ytp-chrome-top.ytp-share-button-visible,
ytd-app:not([guide-persistent-and-visible]) #iv-drawer .iv-drawer-header,
ytd-app:not([guide-persistent-and-visible]) #iv-drawer .iv-drawer-content {
  margin-top: 30px;
}

ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-chrome-top.ytp-share-button-visible,
ytd-app:not([guide-persistent-and-visible]) [theater] #iv-drawer .iv-drawer-header,
ytd-app:not([guide-persistent-and-visible]) [theater] #iv-drawer .iv-drawer-content,
ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-multicam-menu-header,
ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-multicam-menu-items,
ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-playlist-menu-header,
ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-playlist-menu-items,
ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-share-panel-close {
  margin-top: 56px;
}

ytd-app:not([guide-persistent-and-visible]) .ytp-tooltip.ytp-tooltip-opaque.ytp-bottom {
  right: 60px!important;
  top: 35px!important;
}

ytd-app:not([guide-persistent-and-visible]) [theater] .ytp-tooltip.ytp-tooltip-opaque.ytp-bottom {
  right: 60px!important;
  top: 60px!important;
}
`

var styleSheet = document.createElement("style")
styleSheet.type = "text/css"
styleSheet.innerText = styles
document.head.appendChild(styleSheet)